JP2609827B2 - Elevator control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter type elevator.
In the event of a power outage, drive to the nearest floor
Elevator system capable of automatic rescue operation to prevent confinement
It relates to improvement of control devices .

[0002]

2. Description of the Related Art As described in Japanese Patent Application Laid-Open No. 1-259766, a conventional apparatus compares and detects a point in time when the output voltage of a converter becomes equal to a battery voltage at the time of a power failure, and at this point, an elevator is operated by a battery. By driving
The rescue time for passengers trapped in the car was reduced.

[0003] Japanese Patent Application Laid-Open No. 63-196483 discloses a stop.
The battery, which is the energy source for emergency rescue operation,
It is disclosed that the regenerative energy at the time of turning is charged
I have .

[0004]

[Invention is to be solved INVENTION The above prior art, without obtaining choice but to stop the elevator Once in power outages, anxiety to passengers
There was a problem to embrace .

[0005] Further, there is another problem that the installation work cannot be performed unless a building power supply or a temporary power supply to be installed in the building is installed.

It is an object of the present invention is to operate the elevator even if the power outage to the nearest floor at an early stage, resulting to reduce the anxiety of the passengers
To provide a that elevator controller.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an AC power supply.
Rectifier for converting the power of the DC power to DC power,
The first inverter that converts the current into electric power, this first inverter
Drive motor connected to the elevator, electromagnetic brake of the elevator
Rake, control device for controlling the first inverter, AC
From the power from the power supply or from the motor
Battery charged by electric power regenerated through the battery
Convert DC power from this battery into AC power
A second inverter, an AC power supply for detecting a power failure of the AC power supply;
Elevator control device with power outage detection device
The electromagnetic brake utilizing electric power from the battery.
The power supply unit and the AC power supply during normal operation and power outage.
Control the power from the battery to the first inverter.
The battery and the second input so as to supply power to the control device.
Between the inverter and this second inverter and the first inverter
Means for connecting to the controller of the
And a control device for controlling the barter .

[0008]

[Function] First, turn on the power of the electromagnetic brake of the elevator.
Power outage by obtaining from a battery instead of a
Sometimes the brakes work automatically and the elevator stops emergency
And make sure that the AC power supply is
And DC power from the battery over a power outage.
The battery is supplied to the control device of the first inverter.
Between the battery and the second inverter and the second inverter
And the controller of the first inverter are connected.
In addition, when the AC power supply is normal and during a power outage,
DC power from a battery is used to control the first inverter.
For controlling the second inverter to supply power to the power supply
The system stops during the operation of the elevator.
Even if electricity is generated, the control device controls the first inverter
Since the power is continuously supplied without switching the circuit,
First inverter and elevator drive electric connected to it
The aircraft can still be controlled and the elevator
Driving to the nearest floor, etc. becomes possible.

[0009] In one embodiment of the present invention, the battery is supplied with regenerative energy from the first inverter,
The stored energy can be effectively used for normal operation.

[0010] In one embodiment of the present invention, the uninterruptible power supply comprising a battery and a second inverter is an elevator.
Since you are connected to the terminal device data, terminal device for an elevator is no Rukoto such power failure even AC power source becomes the power failure.

Further, in one embodiment of the present invention,
The uninterruptible power source consisting of a battery and a second inverter is the first
Since the power is supplied to the inverter control device, construction operation can be performed even if the AC power supply is not complete.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

[0013] 1 AC power supply, 2 is a straight flow of the power of the AC power supply
Converting the rectifier 3 is a capacitor, the 4 first inverter
Data, 5 electric motor, 13 main rope, 14 passenger cage, 15
The control device, the regenerative transistors 16, 17, 18 Hoyo
Beauty 21 limiting resistor 19 is blocking diode, 20 denotes a battery, 22 second inverter, the supplement power transformer 23, 24 is supplemented mains rectifier, the auxiliary power source capacitor 25, 26 is powered diode, replenishment s collector 27 Diode, 28 is an AC power failure detection device , 29 is a power failure detection signal, 30 is an encoder, 31 is a counterweight, 32
Is an auxiliary power supply, 33 is a power supply contact, 35 is a sheave, 36 is
It is an electromagnetic brake .

Next, the configuration and operation will be described.

[0015] converting the power of the AC power supply 1 into DC by the rectifier 2 to smooth the DC voltage at the capacitor 3.

[0016] converts the smoothed straight flow variable frequency in the first inverter, the ac variable voltage, supplied to the motor 5. The electric motor 5 rotates the sheave 35 and moves up and down the car 14 via the main rope 13.

The car 14 and the counterweight 31 are constructed in a slender manner, and their unbalanced load directions are
If there is surplus to accelerate the beta,
The mechanical energy of the regenerative transistor 16 energy via the electric motor 5, via a blocking diode 19, to charge the battery 20.

The regenerative energy that is charged in the battery 20 constitutes an uninterruptible s source for converting the AC power by the second inverter 2 2.

The AC power supply from the uninterruptible power supply is
A control device for the first inverter, which is supplied to the transformer 15-1
Controller 15-2YaElectromagnetic brake of the elevator 36
Outside of the building, as well as for loads such as elevator lighting,
Elevator control device that can be operated continuously
You.

The control unit 15-2 receives the supply of the battery 20 and the second-in <br/> bar data or Ranaru uninterruptible s source color power, and controls the first <br/> inverter 4 above It is configured to control the exchanges of variable frequency, variable voltage as.

A case where a power failure occurs in the AC power supply 1 will be described. If a power failure occurs in AC power supply 1, AC power failure detection
The output device 28 operates, and the power failure detection signal 29 is output to the controller 15-
Give to 2. Naturally, the voltage across the capacitor 3 starts to decrease.

The control unit 15-2 starts decelerating operation by receiving the power failure detection signal 29, a first inverter 4 f power via a power supply diode voltage across the capacitor 3 is lower than the voltage of the battery 20 potential supplied, driving up the nearest floor in <br/> power of the battery 20 to safely transport the passengers.

In the regenerative operation, when a power failure occurs in the AC power supply, the regenerative energy is decelerated while storing the energy in the battery 20 via the regenerating transistor 16 and the blocking diode 19, and the vehicle is driven to the nearest floor to transport the passenger safely. I do.

Refill power transformer 23, refill power rectifier 2
4, supplementary power supply capacitor 25, supplementary charge diode 27
Is operated only when the potential of the battery 20 is lower than that of the supplementary power supply, and has an auxiliary function. That is, the battery 20 is supplied from the AC power supply 1.
From the electric power or the electric motor 5 through the first inverter 4
The battery is charged by the regenerated power.

According to the above embodiment of the present invention,
Power supply from the battery 20 to automatically
Make sure the brakes do not work dynamically and
Control equipment from the uninterruptible power source consisting of
Power can be supplied to the controller 15, so that the controller 15-2
Power supply from the battery 20
Continue operation without stopping the first inverter 4 receiving the supply
To reduce passengers without stopping the elevator.
It has the effect of being able to be transported to the nearest floor.

Referring to FIG. 3 , another embodiment of the present invention will be described for operation at the construction stage when the AC power supply 1 as a main power supply is not yet complete. Other operations are exactly the same as in the above embodiment.

Since the AC power supply 1 is not complete, the power supply contact 33-1 is opened, the back contact 33-2 of the power supply contact is closed, and the auxiliary power supply 32 is connected to the supplementary power supply circuit.

The construction operation is a construction operation operation of the control device 15 and is performed by the supply from the battery 20 as described above.

When the voltage of the battery 20 drops, it is supplied from the auxiliary power supply 32. As the auxiliary power supply 32, a small-capacity single-phase self-generation power supply is sufficient. Therefore, the construction of the elevator can be started from a time when the power supply facilities are insufficient, and the completion of the elevator can be completed at an early stage. Therefore, the elevator can be used as an elevator for the construction of the building at an early stage, which has an effect of contributing to the efficiency of the building construction.

[0030]

According to the present invention, even when a power failure occurs,
Drive the vehicle to the nearest floor early to reduce passenger anxiety.
Elevator control device can be provided.

[Brief description of the drawings]

FIG. 1 is an embodiment of an elevator control device according to the present invention.
Configuration diagram of.

FIG. 2 shows another embodiment of the elevator control device according to the present invention .
Configuration diagram of施例.

FIG. 3 shows still another elevator control apparatus according to the present invention .
Configuration diagram of an embodiment of.

[Reference Numerals] 1 ... AC power source, 2 ... a rectifier, 4 ... first inverter, 5 ...
Elevator drive motor, 15 - 2 ... first inverter control <br/> control device, 16 ... regenerative transistor, 20 ... battery, 2
2 ... the second inverter, 28 ... AC power supply failure detection apparatus, 2
9: Power failure detection signal, 32: Electromagnetic brake .

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsu Fukuda 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd. (72) Inventor Hiromi Inaba 4026 Kujicho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd. Hitachi Research Laboratory (72) Inventor Shunsuke Mine 1070 Mo, Katsuta-shi, Ibaraki Pref. Hitachi, Ltd. Mito Plant (56) References JP-A-63-196483 (JP, A) JP-A-63-190577 (JP, A) Actual opening Sho 64-3769 (JP, U)

Claims (5)

(57) [Claims] 1. A rectifier for converting power from an AC power supply to DC power, a first inverter for converting the DC power to AC power, an elevator drive motor connected to the first inverter, an electromagnetic brake for an elevator, A control device for controlling the inverter, a battery charged by electric power from an AC power supply or electric power regenerated from the electric motor via the first inverter, a second inverter for converting DC power from the battery to AC power, In an elevator control device provided with an AC power failure detection device for detecting a power failure of an AC power supply, a power supply device for the electromagnetic brake using electric power from the battery, and a power supply from the battery during a normal time and a power failure of the AC power supply. And the second battery so as to supply the electric power to the control device of the first inverter. Hand connecting and between the control device of the second inverter and the first inverter and converter
An elevator control device comprising a step and a step . 2. The control device according to claim 1, wherein the control device for the first inverter includes means for generating a command to decelerate the elevator to the nearest floor based on a power failure detection signal of the AC power failure detection device during elevator operation. An elevator control device, characterized in that: 3. The elevator control device according to claim 1, wherein an output of said second inverter is used as a power source for lighting of the elevator and a control device of the first inverter . 4. The elevator control apparatus according to claim 1, further comprising an auxiliary power supply and a replenishment power supply circuit for replenishing the battery with energy from the auxiliary power supply. 5. The method of claim 1, as means for charging the battery through the first inverter from the motor, the control device for an elevator, characterized in that it includes the battery and connected in series transistor data.